In August, Chelmsford typically sees daytime highs of 20.7°C and overnight lows around 12.7°C. Compared to the annual average high of 13.3°C, August runs +7.4°C.
August in Chelmsford averages a daytime high of 20.7°C and an overnight low of 12.7°C.
August runs +7.4°C compared to Chelmsford's annual average high of 13.3°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 20.7°C and cooler evenings around 12.7°C.